-LRB- CNN -RRB- -- Argentina 's David Nalbandian and Eduardo Schwank kept Argentina 's Davis Cup dreams alive after they thrashed Spain 's Feliciano Lopez and Fernando Verdasco in the doubles rubber 6-4 6-2 6-3 in Seville on Saturday .

Trailing 2-0 after Friday 's singles matches , Argentina had to win Saturday 's only rubber to stop Spain from claiming their fifth win in the competition .

Fighting Ferrer give Spain commanding lead

Nalbandian and Schwank never looked in any trouble throughout the match , breaking in the fifth game of the first set before racing into a 4-0 lead in the second .

Spain 's only two chances to break came in the sixth game of the third set but both times Nalbandian denied them .

Argentina now trail Spain 2-1 . If they win both singles rubbers on Sunday they will become the first team in 72 years to win the David Cup from 2-0 down .

Juan Martin Del Potro will face Rafael Nadal in the first singles match while Nalbadian is scheduled to face David Ferrer .

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Argentina trail Spain 2-1 in Davis Cup after straight sets doubles win

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Nalbandian and Schwank beat Spain 's Lopez and Verdasco 6-4 6-2 6-3

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Nadal to play Del Potro in Sunday 's first singles match on Sunday